--- /dev/null
+// dice-test.c
+//
+// Copyright 2010 Martin Read. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the author nor the names of any other contributors
+// may be used to endorse or promote products derived from this software
+// without their specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <libmormegil/dice.h>
+
+uint32_t keybuf[8];
+uint32_t nonce[2];
+
+int main()
+{
+ int fd;
+ /* INITIALIZATION: Open the system (pseudo-)random number generator
+ * device. */
+ fd = open("/dev/urandom", O_RDONLY, 0);
+ if (fd < 0)
+ {
+ perror("S20prng-test: can't open /dev/urandom");
+ return 1;
+ }
+
+ int i = 0;
+ int testroll;
+ uint64_t counter = 0;
+ int rolls[11];
+
+ /* INITIALIZATION: Read data to use as the "key" and "nonce" from the
+ * file descriptor previously obtained. */
+ read(fd, keybuf, sizeof keybuf);
+ read(fd, nonce, sizeof nonce);
+ /* INITIALIZATION: Load the generator. */
+ dice_setstate(keybuf, nonce, &counter, &i);
+ /* INITIALIZATION: Clear the "rolls" array. */
+ for (i = 0; i < 11; ++i)
+ {
+ rolls[i] = 0;
+ }
+ /* Roll 2d6 a million times and record the results. */
+ for (i = 0; i < 1000000; ++i)
+ {
+ testroll = dice(2, 6);
+ /* Bounds-check the result */
+ if ((testroll < 2) || (testroll > 12))
+ {
+ fprintf(stderr, "S20prng-test: FAIL: 2d6 roll came up %d\n", testroll);
+ return 2;
+ }
+ rolls[testroll - 2]++;
+ }
+ /* Print out the results. You'll notice that this doesn't actually test
+ * the randomness of the results, just lets you visually inspect the
+ * distribution. For reference, the ideal distribution is roughly:
+ * 2: 27777
+ * 3: 55555
+ * 4: 83333
+ * 5: 111111
+ * 6: 138888
+ * 7: 166666
+ * 8: 138888
+ * 9: 111111
+ * 10: 83333
+ * 11: 55555
+ * 12: 27777
+ */
+ for (i = 0; i < 11; ++i)
+ {
+ printf("%d: %d times\n", i + 2, rolls[i]);
+ }
+ return 0;
+}
+
+// vim:ts=8:sw=4:expandtab:fo=cq
+// dice-test.cc
+++ /dev/null
-// dice-test.cc
-//
-// Copyright 2010 Martin Read. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-// 1. Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimer in the
-// documentation and/or other materials provided with the distribution.
-// 3. Neither the name of the author nor the names of any other contributors
-// may be used to endorse or promote products derived from this software
-// without their specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-// SUCH DAMAGE.
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <libmormegil/dice.h>
-
-uint32_t keybuf[8];
-uint32_t nonce[2];
-
-int main()
-{
- int fd;
- /* INITIALIZATION: Open the system (pseudo-)random number generator
- * device. */
- fd = open("/dev/urandom", O_RDONLY, 0);
- if (fd < 0)
- {
- perror("S20prng-test: can't open /dev/urandom");
- return 1;
- }
-
- int i = 0;
- int testroll;
- uint64_t counter = 0;
- int rolls[11];
-
- /* INITIALIZATION: Read data to use as the "key" and "nonce" from the
- * file descriptor previously obtained. */
- read(fd, keybuf, sizeof keybuf);
- read(fd, nonce, sizeof nonce);
- /* INITIALIZATION: Load the generator. */
- dice_setstate(keybuf, nonce, &counter, &i);
- /* INITIALIZATION: Clear the "rolls" array. */
- for (i = 0; i < 11; ++i)
- {
- rolls[i] = 0;
- }
- /* Roll 2d6 a million times and record the results. */
- for (i = 0; i < 1000000; ++i)
- {
- testroll = dice(2, 6);
- /* Bounds-check the result */
- if ((testroll < 2) || (testroll > 12))
- {
- fprintf(stderr, "S20prng-test: FAIL: 2d6 roll came up %d\n", testroll);
- return 2;
- }
- rolls[testroll - 2]++;
- }
- /* Print out the results. You'll notice that this doesn't actually test
- * the randomness of the results, just lets you visually inspect the
- * distribution. For reference, the ideal distribution is roughly:
- * 2: 27777
- * 3: 55555
- * 4: 83333
- * 5: 111111
- * 6: 138888
- * 7: 166666
- * 8: 138888
- * 9: 111111
- * 10: 83333
- * 11: 55555
- * 12: 27777
- */
- for (i = 0; i < 11; ++i)
- {
- printf("%d: %d times\n", i + 2, rolls[i]);
- }
- return 0;
-}
-
-// vim:ts=8:sw=4:expandtab:fo=cq
-// dice-test.cc
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